Designed for constant movement on big days, the lightweight RPM features a highly compressible, ergonomic design so it moves with you, whether you're- climbing the Beckey-Chouinard in the Bugs, third-class scrambling along the Teton's Cathedral Traverse, or trail running/peak bagging in RMNP's high country. It's constructed from water-shedding 210d SilNylon ripstop fabric with perforated, multi-density foam in the shoulder straps and a back panel for breathable comfort. A removable webbing waistbelt, two ice axe loops, cold-weather shockcord and mesh side pockets provide convenient carrying.

I bought this pack mainly for use during a snowboarding trip in BC. I know this is a climbing pack, but it's extremely lightweight and it sits very comfortably on the middle of my back. It's really low profile and it doesn't interfere with arm movement at all. I could definitely see myself using this pack for some very lightweight backpacking trips during the summer. The pack doesn't have a lot of pockets, but it's not really a huge disadvantage. The bag is perfect for what it's meant to do: hang on to your stuff while you're being active. It's also a pretty sweet looking pack, IMO. [...]